Stamper for the exact angular centering on vertical lines and horizontal planes, of the type comprising an engraved sheet of appropriate elastic material, fixed on a suitable base provided with a handle, characterized in that the assembly has been pierced by a through vertical hole, in which an appropriate guide is lodged, passing through the described parts and ending in a point and in which the engraved sheet for the printing and its base have a projection in the form of a point or arrow pointing in a radial direction with respect to the through hole, so that the vertical support of the guide, through its pointed lower termination, on a previously marked point of the document and the orientation of the arrow towards a line also previously dizzy, allow to find the correct position of the stamper before descending it vertically on the guide previously supported on the table, of another hard surface that is low or the document, whereby a recoil spring can be arranged in collaboration with the vertical guide, so that the tip of the guide comes out again after each use. (Machine-translation by Google Translate, not legally binding)
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